Interframe Correlation between images

This program is to calculate interframe correlation between 2 greyscale images of same size

The function INTERFRAME_CORR calculates the inter frame correlation coefficient(IFC) of the images 'im_1' and 'im_2' and outputs the average of the IFC.
Example:
output=interframe_corr(old,new); where old and new are two image files of of greyscale and same size
Author:Santhana Raj.A
https://sites.google.com/site/santhanarajarunachalam/